Hi John,
First of all, no I am not in any way associated with Microsoft, I'm an Apple user like your self, who has been struggling with the same problem ...
I'm noticing that you write "files" (in plural), but as I'm writing you should only delete one single file, maybe that's what goes wrong? Also I need to state that this only solves the problem occurred when you have tried to delete these mystery "TimeProfile" calendars, it does NOT remove them, for that I guess we need to wait for a fix from Microsoft.
Best regards
John Stumpe